<?xml version="1.0" encoding="utf-8"?> <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" initialize="init();"> <mx:Script> <![CDATA[ private var loader:Loader = new Loader(); private var request:URLRequest; private var sizeflag:Boolean = true; //图片大小标志，true为小图 private var i:int = 0; //计数器跳动次数记录 private var timer:Timer = new Timer(25); public function init():void //初始化 { request = new URLRequest("监控背景.jpg"); //放入图片 loader.load(request); loader.contentLoaderInfo.addEventListener(Event.COMPLETE,onComplete); timer.addEventListener(TimerEvent.TIMER,reloadImg); //开始计数 timer.start(); } public function onComplete(e:Event):void { var bitmap:Bitmap = Bitmap(loader.content); img.source = bitmap; } public function reloadImg(e:TimerEvent):void //按照计数奇偶切换图片 { //img.removeChildAt(0); if (i%2 == 1) { request = new URLRequest("监控背景.jpg"); loader.load(request); } else { request = new URLRequest("监控背景1.JPG"); loader.load(request); } i++; } public function changeImgSize():void //改变图片大小 { if (sizeflag){ img.width = 640; img.height = 480; sizeflag = false; } else { img.width = 320; img.height = 240; sizeflag = true; } } ]]> </mx:Script> <mx:Image id="img" x="10" y="10" width="320" height="240"/> <mx:Button id="myBtn" x="10" y="498" label="Button" click="changeImgSize();"/> </mx:Application>
